404365601 has 2 divisors, whose sum is σ = 404365602. Its totient is φ = 404365600.

The previous prime is 404365583. The next prime is 404365603. The reversal of 404365601 is 106563404.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 340365601 + 64000000 = 18449^2 + 8000^2 .

It is a cyclic number.

It is not a de Polignac number, because 404365601 - 2²⁶ = 337256737 is a prime.

Together with 404365603, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404365603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202182800 + 202182801.

It is an arithmetic number, because the mean of its divisors is an integer number (202182801).

Almost surely, 2^404365601 is an apocalyptic number.

It is an amenable number.

404365601 is a deficient number, since it is larger than the sum of its proper divisors (1).

404365601 is an equidigital number, since it uses as much as digits as its factorization.

404365601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 404365601 is about 20108.8438504057. The cubic root of 404365601 is about 739.4771086931.

The spelling of 404365601 in words is "four hundred four million, three hundred sixty-five thousand, six hundred one".